Passive and Active Transport

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically along the concentration gradient.

Front

What is an example of osmosis?

Back

An example of osmosis is when plant roots absorb water from the soil.

Front

What is an example of diffusion?

Back

An example of diffusion is the spreading of a drop of food coloring in water.

Front

What type of transport does not require energy?

Back

Passive transport does not require energy.

Front

What type of transport requires energy?

Back

Active transport requires energy.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, a cell loses water and may shrivel due to higher solute concentration outside the cell.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, a cell gains water and may swell or burst due to lower solute concentration outside the cell.